Searched for: subject%3A%22Sol%255C-gel%22
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Heeremans, Tess (author)
For the first time, we present data on the actual growth rate, supersaturation, viscosity, and growth mechanism that lead to spherulitic growth. So far, fundamental questions regarding the growth conditions, mechanisms, and the necessity of a viscous growth medium have remained unresolved. Surprisingly, we observed a sol-gel transition in...
master thesis 2024
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Chen, Y. (author), de Lima, Luiz Miranda (author), Li, Zhenming (author), Ma, Bin (author), Lothenbach, Barbara (author), Yin, Suhong (author), Yu, Qijun (author), Ye, G. (author)
The synthesis of N-A-S-H gel with high Si/Al ratios (>2) has been rarely reported in the literature, leaving the establishment of a reliable synthesis route as an open challenge. This paper aims to synthesize N-A-S-H gels with Si/Al ratios ranging from 1 to 3 and establish their thermodynamic database. The effects of reaction temperature,...
journal article 2024
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van Dam, J.P.B. (author), Tiringer, U. (author), Abrahami, S.T. (author), Milošev, I. (author), Terryn, H.A. (author), Kovač, J. (author), Mol, J.M.C. (author)
The sol–gel process is a chemical surface preparation method based on hydrolysis and polycondensation reactions for enhanced adhesion for metallic substrates in adhesive bonding and coating applications. This paper describes an investigation into the effect of the microstructural complexity of two commonly used aerospace aluminium alloys (AAs...
journal article 2024
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del Olmo, R. (author), López, E. (author), Matykina, E. (author), Tiringer, U. (author), Mol, J.M.C. (author), Mohedano, M. (author), Arrabal, R. (author)
Plasma electrolytic oxidation (PEO) has been targeted as an eco-friendly alternative technology to conventional chromic acid anodizing (CAA) for corrosion protection of aluminium alloys in the aircraft industry. However, conventional PEO technology implies high energy consumption. Flash-PEO coatings (≤10 μm) produced in short treatment times ...
journal article 2023
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Tiringer, U. (author), van Dam, J.P.B. (author), Abrahami, S.T. (author), Terryn, H.A. (author), Kovač, J. (author), Milošev, I. (author), Mol, J.M.C. (author)
The sol-gel synthesis process is a versatile method used to produce a wide diversity of materials and is being increasingly used as a surface modification method to alter porosity, wettability, catalytic activity, biocompatibility and corrosion performance of underlying substrates. Silane sol–gel films deposited on aluminium and aluminium...
review 2021
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del Olmo, R. (author), Tiringer, U. (author), Milošev, I. (author), Visser, P. (author), Arrabal, R. (author), Matykina, E. (author), Mol, J.M.C. (author)
The effect of the presence of an anodic film and hybrid sol-gel coating loaded with corrosion inhibitors was evaluated as a strategy for enhanced barrier and active corrosion protection of aluminium alloy 2024-T3. In this study, AA2024-T3 specimens were anodized in a modified sulphuric-citric acid bath (SCA) as the first layer of a corrosion...
journal article 2021
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Rashidashmagh, Fatemeh (author), Doekhi-Bennani, Y. (author), Tizghadam-Ghazani, Mostafa (author), van der Hoek, J.P. (author), Mashayekh-Salehi, Ali (author), Heijman, Sebastiaan (author), Yaghmaeian, Kamyar (author)
A novel sol-gel method was employed in this study to efficiently synthesize SnO2 nanoparticles to catalyze the ozonation of acetaminophen (ACT) from aqueous solutions. The influence of various parameters including Sn source, type of capping and alkaline agents, and calcination temperature on the catalytic activity of the SnO2 preparations was...
journal article 2021
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He, Shuai (author)
Due to the demand of reducing the weight of aircrafts to reduce the carbon consumptions without compromising the mechanical properties, aluminium alloy AA2024-T3 has been widely applied in the aircrafts’ manufacture. However, the alloying elements which ensure the mechanical properties also could increase the susceptibility of localized...
master thesis 2020
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Garg, Vishant (author)
Al-Li alloys were introduced for the use in aerospace applications due to its many advantages over steel such as its low density, good thermal and electrical conductivity and corrosion resistance of these alloys. The current generation of Al-Li alloys were developed to replace the currently used AA2024 alloy in commercial airframes, military and...
master thesis 2020
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Poltorak, L. (author), van der Meijden, Nienke (author), Skrzypek, Sławomira (author), Sudhölter, Ernst J. R. (author), de Puit, M. (author)
In this work, we have simultaneously examined, electrochemically driven deposition of three proteins (haemoglobin, acid phosphatase, and α-amylase) and silica films at a polarized liquid–liquid interface. The interfacial adsorption of the proteins occurs efficiently within the acidic pH range (pH = 2–4). The interfacial charge transfer...
journal article 2020
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Karakiliç, Pelin (author), Toyoda, Ryo (author), Kapteijn, F. (author), Nijmeijer, Arian (author), Winnubst, Louis (author)
The transformation of microporous, amorphous silica membranes into b-oriented silicalite-1 (MFI) zeolite layers via in-situ crystallisation was investigated. The effect of synthesis parameters, such as the type and concentration of the silica precursor, crystallisation time and temperature, on the morphology of silicalite-1 (MFI) zeolite...
journal article 2019
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Poltorak, L. (author), van der Meijden, N. (author), Oonk, S. (author), Sudhölter, Ernst J. R. (author), de Puit, M. (author)
The behaviour of acid phosphatase at an electrified liquid–liquid interface was studied in this work. It was found that only the protonated form of the protein can undergo interfacial adsorption which is affected by the pH of the aqueous phase. With ion transfer voltammetry we could detect acid phosphatase in concentrations as low as 0.1 μM....
journal article 2018
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Carabat, A.L. (author), Meijerink, M.J. (author), Brouwer, J.C. (author), Kelder, E.M. (author), van Ommen, J.R. (author), van der Zwaag, S. (author), Sloof, W.G. (author)
A successful sol-gel process to encapsulate molybdenum di-silicide MoSi<sub>2</sub> particles with a closed and thermally stable Al<sub>2</sub>O<sub>3</sub> layer using aluminium tri-sec-butoxide as a precursor is presented. The processing conditions such as precursor selection and temperature were optimized through analysing the interaction...
journal article 2018
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Abdolah Zadeh, M. (author)
Inspired by the state of the art and the recent advances in the field of self-healing corrosion protective coatings, the thesis entitled “Self-healing corrosion protective sol-gel coatings” addresses novel routes to self-healing corrosion protective sol-gel coatings via extrinsic and intrinsic healing approaches. The employed approaches aim at...
doctoral thesis 2016
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Carvajal Nunez, U. (author)
doctoral thesis 2014
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Recloux, I. (author), Olivier, M.G. (author)
Among the different alternative surface treatments developed in view of the coming prohibition of chromates in aeronautic applications, sol-gel coatings show very promising properties. These layers provide a barrier against aggressive environments. Moreover, their performance can be improved by introducing inhibitive agents in the coating....
conference paper 2013
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AbdolahZadeh, M. (author), Esteves, A.C.C. (author), Van der Zwaag, S. (author), Garcia Espallargas, S.J. (author)
Sol-gel technology is increasingly being used in coatings for corrosion protection and adhesion improvement. So far, the self-healing concept in sol-gel coatings has only been approached from extrinsic healing perspective (i.e. use of nano and micro carriers of corrosion inhibitors) [1]. Despite the benefits of this approach, the damaged area...
conference paper 2013
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AbdolahZadeh, M. (author), Esteves, A.C.C. (author), Van der Zwaag, S. (author), Garcia Espallargas, S.J. (author)
Sol-gel technology is increasingly being used in coatings for corrosion protection and adhesion improvement. So far, the self-healing concept in sol-gel coatings has only been approached from extrinsic healing perspective (i.e. use of nano and micro carriers of corrosion inhibitors) [1]. Despite the benefits of this approach, the damaged area...
conference paper 2013
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Tran, T.H.Y. (author)
Carbon capture and storage (CCS) can significantly contribute to the reduction of the emission of the greenhouse gas CO2. Capture by means of CO2 sorption or membrane-based separation processes is a promising way for achieving decarbonization of fuel or flue gas cleaning. In the field of separation and also purification of hydrogen, membrane...
doctoral thesis 2011
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Tourne-Peteilh, C. (author), Begu, S. (author), Lerner, D.A. (author), Galarneau, A. (author), Lafont, U. (author), Devoiselle, J.M. (author)
The present work reveals a new and simple strategy, a one-step sol–gel procedure, to encapsulate a low water-soluble drug in silica mesostructured microparticles and to improve its release in physiological media. The synthesis of these new materials is based on the efficient solubilisation of a poorly water-soluble drug in surfactant micelles ...
journal article 2011
Searched for: subject%3A%22Sol%255C-gel%22
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